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Title: Light collection optics for measuring flux and spectrum from light-emitting devices

Patent ·
OSTI ID:1254166
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Systems and methods for accurately measuring the luminous flux and color (spectra) from light-emitting devices are disclosed. An integrating sphere may be utilized to directly receive a first portion of light emitted by a light-emitting device through an opening defined on the integrating sphere. A light collector may be utilized to collect a second portion of light emitted by the light-emitting device and direct the second portion of light into the integrating sphere through the opening defined on the integrating sphere. A spectrometer may be utilized to measure at least one property of the first portion and the second portion of light received by the integrating sphere.

Research Organization:
KLA-Tencor Corporation, Milpitas, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0005877
Assignee:
KLA-Tencor Corporation (Milpitas, CA)
Patent Number(s):
9,347,824
Application Number:
14/527,034
OSTI ID:
1254166
Resource Relation:
Patent File Date: 2014 Oct 29
Country of Publication:
United States
Language:
English

References (3)

Detector for spectrometry and integrating sphere measuring device, and spectrophotometer using the same patent April 2004
Prober for testing light-emitting devices on a wafer patent May 2004
High Throughput Hot Testing Method And System For High-Brightness Light-Emitting Diodes patent-application May 2013

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36 MATERIALS SCIENCE